What is it to do on the computer beside social media?

[Joe C]

Does Delete Facebook Really Mean Delete?
No, deleting your Facebook account does not mean that all your personal data is totally erased from Facebook's computer servers

Delete Facebook Definition: Permanent Account Deletion

In addition, it's worth noting that, while your account may be gone, Facebook retains the right to keep certain types of information even after your account is deleted.

How to Permanently Delete a Facebook Account: 11 Steps

You may always be inside of FB's servers but that's o.k. because you can't tell